#include <Windows.h>
int main(void)
{
Beep(1000,1000);
Sleep(1000);
MessageBox(0,0,0,0);
system("start");
system("calc");
system("mspaint");
system("control");
system("notepad");
system("services.msc");
system("SoundRecorder");
system("narrator");
}

、、、、、、、、、、、、、、、、、
c:\program files\microsoft visual studio\098\vc98\include\windows.h(1) : error C2018: unknown character '0xa1'
c:\program files\microsoft visual studio\098\vc98\include\windows.h(1) : error C2018: unknown character '0xa1'
c:\program files\microsoft visual studio\098\vc98\include\windows.h(1) : error C2018: unknown character '0xa1'
c:\program files\microsoft visual studio\098\vc98\include\windows.h(1) : error C2018: unknown character '0xa1'
c:\program files\microsoft visual studio\098\vc98\include\windows.h(1) : error C2014: preprocessor command must start as first nonwhite space
c:\documents and settings\administrator\桌面\qsaw.cpp(4) : error C2065: 'Beep' : undeclared identifier
c:\documents and settings\administrator\桌面\qsaw.cpp(5) : error C2065: 'Sleep' : undeclared identifier
c:\documents and settings\administrator\桌面\qsaw.cpp(6) : error C2065: 'MessageBox' : undeclared identifier
c:\documents and settings\administrator\桌面\qsaw.cpp(7) : error C2065: 'system' : undeclared identifier
c:\documents and settings\administrator\桌面\qsaw.cpp(15) : warning C4508: 'main' : function should return a value; 'void' return type assumed
执行 cl.exe 时出错.

qsaw.obj - 1 error(s), 0 warning(s)
求大侠们 解答啊